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Earth surface ch.2

uniformitarianism The geologic principal that the same geologic processes that operates today operate in the past to change Earth's surface.
Erosion The processed by water,ice,wind.and gravity moves by gravity weather particles.
Weathering The chemical in physical progress that breaks down rock and other substances.
Mechanical Weathering The type of weathering in which rock is physically broken into smaller peaces.
Chemical Weathering The process that breaks down rock through chemical changes.
Abrasion The grinding away of rocks by other rock participial carried in water and ice and wind.
Frost Wedging Process that splits rock when water seeps into cracks then freezes and expands.
Oxidation A chemical change in which a substance combines with oxygen as when iron oxidation forming rust.
Permeable Characteristic of a material that contains connected air spaces or pores that water can seep through easily.
Soil The loose weathered material on Earth's surface in which plamts can grow.
Bedrock Rock that is made up Earth's crust.
Humus Dark-colored organic material in soil.
Fertility A measure of how well soil supports a plants growth.
Loam Rich,Ferat soil that makes up about equal part of clay,sand,and slit.
pH Scale A range of values whose temperature used to indicate how acidic or basic a substance is.
Soil horizon A layer of soil that differ in color and texture from the layer above.
Topsoil The crumble topmost layer soil made up of clay and other minerals and humus.
Decomposer An organism that gets energy by breaking down waste and dead organism, and return raw material to the soil and water.
Created by: aka10615